Human chromosome 2 appears to be:
A. a fusion product of two simian chromosomes.
B. significantly different from simian chromosome 2.
C. 50% homologous to simian chromosome 2.
D. primarily coding for human traits.
A
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The competitive exclusion principle states that _____
A) it is not possible for two species with the same niche to coexist in the same region B) it is not possible for two species to compete for the same resources C) two species with different niches will not compete for the same resources D) two species with the same niche will constantly be competing for resources
Which of the following is not a general requirement for complex multicellular life?
A. Cells must retain a full range of functions, including reproduction. B. Cells must stick together. C. Cells must communicate with one another. D. Cells must participate in a network of genetic interactions that regulate cell division. E. All of these options are requirements for complex, multicellular life.
Hematocrit approximately makes up what percent of the total blood volume?
a. 10 percent b. 25 percent c. 45 percent d. 50 percent e. 70 percent
Answer the following statements true (T) or false (F)
1.Lichens and mosses that can grow on and erode rock would be considered pioneer species. 2.All communities eventually reach the climax state, in which all components are consistent. 3.Energy is constantly being recycled within an ecosystem. 4.Raw sewage within a water ecosystem can kill fish because respiration by the microbes in the sewage reduces the concentration of oxygen within the water. 5.In a process called denitrification, bacteria convert NO – to N .